Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S
The AirTAC Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S is a genuine double-acting COMPACT (JIS) cylinder with an EXTERNAL adjustable stop on the extend stroke — a Ø140mm bore and 100mm full stroke. Turn the stop to fine-tune the end position on the machine without changing parts.
- BoreØ140 mm
- Full stroke100 mm
- Port sizePT3/8
- Adjuster threadM27×2.0
About the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S
The AirTAC ACQJ140X100-20S is a double-acting, single-rod JIS compact cylinder engineered for heavy-duty applications requiring precise extend-position tuning. It features an external M27x2.0 threaded stop with a lock nut, allowing you to shorten the extend stroke within a 20 mm window, yielding a usable extend range of 80 to 100 mm. The retract stroke remains completely unaffected. As a big-bore compact variant, it accommodates standard strokes up to 300 mm.
Because the piston area is unchanged, the output force is identical to a standard ACQ of this bore, delivering 7696.9 N push and 7294.8 N pull at 0.5 MPa. The unit incorporates fixed NBR elastomer bumpers at both ends for end-of-stroke deceleration rather than adjustable air cushions. Equipped with a piston magnet (-S), it supports both reed and electronic solid-state sensors via integrated grooves. Note that a plain compact cylinder will not hold its load on air loss; utilize an external rod lock for fail-safe positioning.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S Technical Specifications
| Model | Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S |
|---|---|
| Series | ACQJ JIS compact adjustable-stroke cylinder |
| Bore size | Ø140 mm |
| Full stroke | 100 mm |
| Adjuster thread | M27×2.0 |
| Port size | PT3/8 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Rod thread | M22×2.5 (F) / M30×1.5 (B) |
Specifications follow the official AirTAC ACQJ datasheet. The adjustable stop shortens the EXTEND stroke only; the piston area — and therefore the force — is the same as a standard ACQ of this bore. Adjustable window options: 10/20/30/40/50/75/100 mm.
Theoretical Output Force (Ø140mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 7697 N | 7295 N |
| 0.7 MPa | 10776 N | — |
| Max (@1.0 MPa) | 1570 kgf | |
Force equals a standard ACQ of the same bore — the adjuster changes stroke length, not piston area. Actual usable force is lower due to friction; size with a safety margin.
Model Code: Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S
| ACQJ | JIS compact double-acting ADJUSTABLE-STROKE cylinder series. |
|---|---|
| 140 | Bore size in mm. |
| ×100 | Full stroke length in mm. |
| -0 | Adjustable window in mm (extend stroke can be shortened by up to this). |
| S / B | Magnet (S) / male-thread rod (B); omit for none / female thread. |
Thread: PT standard (G / NPT available). Related: ACQ (fixed stroke), ACQD (double rod), TACQ (guided / non-rotating).
Where the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S Is Used
Press Tonnage Setup
Dial in the exact extend stop on a large metal-stamping press to test different tonnage limits or material thicknesses without machining new spacer blocks.
Automotive Welding Changeover
Adjust the extend endpoint on the fly during product changeovers for varying chassis frame dimensions on an automotive welding line.
Palletizer Stroke Tuning
Fine-tune the extend distance on a heavy-load palletizer to accommodate different pallet heights or package sizes during production trials.
Is the Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S the Right Cylinder?
Selecting this 140 mm bore model provides 7696.9 N of push force at 0.5 MPa. If your application requires less thrust, the 125 mm bore variant offers 6135.9 N push, whereas stepping up to the 160 mm bore yields 10053.1 N. A fixed-stroke ACQ cylinder is sufficient if exact end-position adjustment is never required. When ordering, verify the 100 mm full stroke, the 20 mm adjuster window, the -S magnet option, the PT3/8 port size, and the default female M22x2.5 rod-end thread.
Quick checklist
- ✓ Need on-machine end-position tuning?
- ✓ Full stroke and adjust window (mm)
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Female (blank) or male (B) rod thread
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Lock the adjuster nut after setting the stop.
- check The stop limits the EXTEND stroke only.
- check Avoid side load on the short piston rod.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACQJ125~160 Adjustable Compact Cylinder ACQJ140X100-20S FAQ
At 0.5 MPa, the push force is 7696.9 N and the pull force is 7294.8 N; at 0.7 MPa, the push force is 10775.7 N. The maximum push force is 1570 kgf at 1.0 MPa. The full stroke is 100 mm with a 20 mm adjustment window, giving a usable extend range of 80-100 mm. The external adjuster utilizes an M27x2.0 thread.
No, altering the extend position via the external stop only changes the stroke length, not the piston area, so the force remains identical to a standard ACQ. The cylinder relies on fixed NBR elastomer bumpers at both ends for deceleration rather than adjustable air cushions. For high kinetic energy loads, you should slow the approach speed or add an external shock absorber.
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